Concrete suitable for TBM pressure injection type construction and preparation method

The invention belongs to the technical field of building materials, and particularly relates to concrete suitable for TBM pressure injection construction and a preparation method thereof. The concreteis prepared from, by mass, 8.0%-16.0% of silicic acid cement, 4.0%-12.0% of sulphoaluminate cement,...

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Bibliographic Details
Main Authors CHEN PING, HU CHENG, LI SHUNKAI, MING YANG
Format Patent
LanguageChinese
English
Published 16.03.2021
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:The invention belongs to the technical field of building materials, and particularly relates to concrete suitable for TBM pressure injection construction and a preparation method thereof. The concreteis prepared from, by mass, 8.0%-16.0% of silicic acid cement, 4.0%-12.0% of sulphoaluminate cement, 3.2%-4.8% of ultrafine powder, 31.2%-33.6% of sand, 32.0%-34.0% of broken stone, 0.24%-0.48% of water reducing agent, 0.04%-0.08% of retarder, 0.12%-0.24% of early strength agent, 0.12%-0.36% of non-segregator, 2.4%-4.8% of steel fibers, and 7.2%-8.4% of water. The preparation method comprises thefollowing steps: using the powdery materials to prepare a dry mixture, adding water, an additive and the steel fibers, and conducting stirring for 2-3 minutes to obtain a concrete mixture. The concrete has the characteristics of good working performance, good slump retention, high early strength, high land-water strength ratio, excellent comprehensive performance and the like, the expansion degreeis 640-680mm, the slump lo
Bibliography:Application Number: CN202011080850